The complete set of vacuum booster of brake master cylinder is the integrated part composed by the vacuum servo air lock, the control valve and the brake master cylinder, and they mainly consist of the brake master cylinder, the front cover, the back cover, the first and second membranes and the liner plate, the inner housing plate, the sliding sleeve, the piston and the complete set of control valve.

         At present, the vacuum booster of brake master cylinder made by our company includes two types: the double membranes booster and the single membrane booster, among them, the double membranes booster has the specifications of 8.5” and 8”+9”, etc., which are suitable for the light car of 1 ton to 3 tons, and the single membrane booster has several specifications of 6”, 7”, 7.5”, 8”, 8.5”, 9” and 10.5”, etc, which are suitable for the car, the mini car and the light car under 3 tons.